Improvement in building-blocks



s. KRAcKoWIzEP. s. P. scHuLzE.r

BUILDING-BLOCKS.

No. 194,250. Patented Aug.14,1877.

n L @u @u UNITED STATES PATENT OFFICE.

STEPHEN KRACKOWIZER, OF HOBOKEN, NEW JERSEY, AND PAUL SOHULZE,

` OF BROOKLYN, NEW YORK.

IMPROVEMENT IN BUILDING-BLOCKS.

Specification forming part. of Letters Patent No. l94,250, dated August 14, 1877; application filed June 14, 1877.

To all 'whom it may concern Be it known that we,STE1 nEN KEAoKowI- ZEE, of Hoboken, in the county of Hudson and State of New Jersey, and PAUL SoEULzE,

of Brooklyn, in the county of Kings and State building-block. Figs. 4 and 5 are sections of the same in the plane tdw', Fig. 3, respectively.

Similar letters indicate corresponding parts.

This invention consists in a building-block the top and bottom surfaces of which are Hat, while its four sides are ogeeshaped, so that, when two or more blocks are joined together, the upper and lower quarter of each sideform supported or supporting surfaces, and the two middle quarters form supporting or supported surfaces, according to the position of each block in relation to the adjoining blocks.

In the drawing, the letter A designates our building-block, the upper surface c and the bottom surface b of which are flat and rectangular, the bottom surface being square, while the upper surface is an oblong rectangle. The sides c d ef of our block are ogee-shaped, as shown in Figs. 4 and 5, each side being composed of two segments of circles described from centers g h, as shown in Fig. 5.

In building a flat arch from our blocks the square surfaces of all the blocks are turned, down and the oblong rectangular surfaces are turned up, and if two blocks., A A', Fig. 2, are placed together, the upper quarter'i and the lower quarter j of the side d of block A are supported by the corresponding quarter i' j of the block A', while the middle quarters k of the block A support the corresponding quarters k' Z' of the block A', or,in other words, the upper and lower quarters of each side form supported or supportin g surfaces, and the middle quarters of each side form supporting or supported surfaces.

ln building a at arch between two beams, B B, Figs. 1 and 2, the blocks adjoining the beams have to be formed so that they fill out the spaces left between the beams and the ad' jacent blocks.

What we claim as new, and desire to secure by Letters Patent, is-

A building-block the top and bottom sides or surfaces of which are Hat, while its four sides c d ef are ogee-sbaped, substantially as and for the purpose herein shown and described.

In testimony that we claim the foregoing we have hereunto set our hands aud seals this 12th day of June, A. D. 1877.

STEPHEN KEAoKowIZEE. [1.. s] PAUL SOHULZE. L. s.]

Witnesses:

W. HAUEF,-

E. F. KASTENHUBEE. 

